Service CONTRACT NO: EDO/01/2017
ENVIRONMENTAL TEAM for
DEVELOPMENT OF
ANDERSON ROAD QUARRY SITE -
ROAD IMPROVEMENT WORKS
Under Environmental Permit no. EP-513/2016
Monthly Environmental Monitoring & Audit Report
JULY 2020
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CLIENTS: |
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Civil Engineering and
Development Department |
Lam Environmental Services Limited 11/F Centre Point 181-185
Gloucester Road, Wanchai, H.K. Telephone:
(852) 2882-3939 Facsimile:
(852) 2882-3331 E-mail:
info@lamenviro.com Website:
http://www.lamenviro.com |
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Certified
by: |
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Sam Lam Environmental
Team Leader |
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DATE: |
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13 August 2020 |
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1.1.......... Scope of the Report
1.2.......... Structure of the Report
2.2.......... Scope of the Project and Site
Description
2.3.......... Project Organization and Contact
Personnel
2.4.......... Construction Activities
3 Status of Regulatory Compliance
3.1.......... Status of Environmental Licensing and
Permitting under the Project
3.2.......... Status of Submission under the
EP-513/2016
4.1.......... Noise Monitoring
4.3.......... Water Quality Monitoring
5.1.......... Noise Monitoring Results
5.2.......... Air Monitoring Results
5.3.......... Water Quality Monitoring Results
5.4.......... Waste Management
6.1.......... Noise
Monitoring
6.2.......... Air Quality Monitoring
6.3.......... Water Quality Monitoring
6.4.......... Review
of the Reasons for and the Implications of Non-compliance
6.5.......... Summary of action taken in the event of
and follow-up on non-compliance
8. Complaints,
Notification of Summons and Prosecution
lIST OF TABLES
Table 2.1 Schedule 2 Designated Projects under this
Project
Table 2.2 Contact Details of Key Personnel
Table 3.2 Summary of submission status under
EP-513/2016
Table 4.1 Noise Monitoring Station
Table 4.2 Noise Monitoring Equipment
Table 4.3 Action and Limit Level for Noise Monitoring
Table 4.4 Air Monitoring Station
Table 4.5 Air Quality Monitoring Equipment
Table 4.6 Action and Limit Level for Air Quality
Monitoring
Table 4.7 Marine Water Quality Stations for Water
Quality Monitoring
Table 4.8 Water Quality Monitoring Equipment
Table 4.9 Action and Limit Level for Water Quality
Monitoring
Table 5.1 Summary of Quantities of Inert C&D
Materials
Table 5.2 Summary of Quantities of C&D Wastes
Table 7.1 Summary of Environmental Inspections
Table 7.2 Summary of Lanscape Inspections
Table 7.3 Summary
of Ecological Monitoring
Table 8.1 Cumulative Statistics on Complaints
Table 8.2 Cumulative Statistics on Successful
Prosecutions
Table 9.1 Construction Activities and Recommended
Mitigation Measures in Coming Reporting 2 Months
lIST OF FIGUREs
Figure 2.2 Project Organization Chart
Figure 4.1 Locations
of Noise Monitoring Station (for Road Improvement Work 1 & 2)
Figure 4.2 Locations
of Noise Monitoring Station (for Road Improvement Work 3)
Figure 4.3 Locations
of Air Quality Monitoring Station (for Road Improvement Work 1 & 2)
Figure 4.4 Locations
of Air Quality Monitoring Station (for Road Improvement Work 3)
Figure 4.5 Locations
of Water Quality Monitoring Station (for Road Improvement Work 1 & 2)
Figure 4.6 Locations
of Water Quality Monitoring Station (for Road Improvement Work 3)
lIST OF APPENDIces
Appendix 3.1 Environmental Mitigation Implementation Schedule
Appendix 4.1 Action and Limit Level
Appendix 4.2 Copies of Calibration Certificates
Appendix 4.3 Wind data extracted from HKO Automatic
Weather Station
Appendix 5.1 Monitoring Schedule for Reporting Month
Appendix 5.2 Noise Monitoring Results and Graphical
Presentations
Appendix 5.3 Air Quality Monitoring Results and Graphical
Presentations
Appendix 5.4 Water Quality Monitoring Results and
Graphical Presentations
Appendix 5.5 Monthly Summary Waste Flow Table
Appendix 6.1 Event and Action Plans
Appendix 6.2 Summary for Notification of Exceedance
Appendix 9.1 Construction Programme of Individual Contracts
EXECUTIVE SUMMARY
i.
This
is the Environmental Monitoring and Audit (EM&A) Monthly Report
– July 2020
of Development
of Anderson Road Quarry Site – Road Improvement Works under Environmental
Permit no. EP-513/2016 (Hereafter as “the Project”). The construction works of
the Project was commenced on 2 November 2018 and the tentative completion date
is end of 2023. This is the 21st
EM&A report presenting the environmental monitoring findings and
information recorded during the period of 1 July 2020 to 31 July 2020. The cut-off date of reporting is at the end of each
reporting month.
ii.
In
the reporting month, the principal work activities conducted are as follow:
Works in Road Improvement Works 1 (RIW1)
·
Earth works (such as
temporary soil nail, form working platform etc) at RWC2 in-progress; No fine
concrete construction at RWC2 area is in progress;
·
RC works at KS27
subway extension is in progress;
·
RC works at FE1 was
completed;
·
Gasmain laying (by
Towngas company) works is in-progress;
Works in Road Improvement Works 2 (RIW2)
·
Retaining wall
construction, RC works at Slope C3 type 3C was in progress;
·
Preparation works for
RC works at Slope C3 type 3A and 3D were in progress;
·
Socket-H piles work
at CT4 was in-progress;
·
Modify existing
pedestrian crossing facilities and remove existing central median works at at
junction On Sau Road / Clean Water Bay Road and On Sau Road were in-progress;
Works in Road Improvement Works 3 (RIW3)
·
Mini-pile
construction at RWD1 along Sau Mau Ping Road is in progress.
·
Water-main
works for new Public Toilet at Sau Mau Ping Road is in progress;
·
ELS
works and construction pile cap for temporary platform were in-progress.
·
Rock
excavation works using drill and split method at Slope D3 along Lin Tak Road
was in-progress;
·
Retaining
wall construction at slope crest of Slope D3 was in-progress;
·
No-fines
concrete construction at slope crest of Slope D3 is in progress;
·
Inspection
Pit for UU at Sau Mau Ping Road.
·
Rock-fall
fence for Lin Tak Road (Stage 2) was in-progress.
Air Quality
Monitoring
iii.
1-hour Total Suspended
Particulates (TSP) monitoring was conducted at eight monitoring stations. The sampling frequency
is 3 times in every 6 days in the reporting month.
iv.
No action or limit level exceedance was recorded in the reporting
period.
Noise Monitoring
v.
Noise monitoring was conducted at five noise monitoring stations once per
week in the reporting month.
vi.
Ad- hoc noise monitoring for NMC05 was conducted on 2, 9, 16, 23 and 30
July 2020.
vii.
No action or limit level exceedance was recorded during this reporting
period.
viii.
For the limit level exceedance recorded at NMC05 on 11 June 2020, repeat
measurement was conducted to confirm result and reviewed the trend of noise
measurement. Analysis of contractor’s working procedure. Additional monitoring
was conducted on 12 June 2020 and exceedance of limit level was still recorded,
81 dB(A), therefore, follow-up monitoring has been conducted on 12 June 2020
and no further exceedance was recorded.
Rock slope excavation works, mini pile and
ELS at RIW3 were conducted under Contract NE/2017/03 around the concerned
location during the time of measurement. The drilling works at Lin Tak Road was
identified as the major noise source causing the exceedance by the observation
during measurement on 11 June 2020. The working area of the driller was not
covering by noise barrier or other mitigation measures for minimising the
construction noise. As such, the exceedance was considered as project related.
Water Quality Monitoring
x.
No water can be collected at Station AC1 during this reporting period as
the station was dried out during the monitoring scheduled in the reporting month.
xi.
No water can be collected at Station AC2 on 24, 27 and 29 July 2020 as
the station was dried out during the monitoring scheduled in the reporting
month.
xii.
No water can be collected at Station AC3 on 31 July 2020 as the station
was dried out during the monitoring scheduled in the reporting month.
xiii.
No water can be collected at Station E on 4, 6, 8, 10, 13, 15, 17, 20,
22, 24, 27, 29 and 31 July 2020 as the station was dried out during the
monitoring scheduled in the reporting month.
xiv.
One (1) limit level exceedance of suspended solid and one (1) limit
level exceedance of turbidity were recorded at Station F on 2 July 2020. A
repeated in-situ measurement has been conducted immediately to confirm the
exceedances. Checking with contractor for the construction activities conducted
on 2 July 2020. Increased the monitoring frequency to daily on 3 July 2020, no
further exceedance was recorded.
The weather was rainy from 1 to 2 July
2020. Milky water was observed at monitoring station F during water quality
monitoring. RC works and demolition of median island were commenced at RIW2
construction site area under Contract No. NE/2017/03 on 2 July 2020. Silty
water was observed flowing into the nearby public drainage. Turbidity and
suspended solid results were not high at Station E (18.2 NTU and 15.4 mg/L),
station AC2 (12.5 NTU and 67.7 mg/L), the high suspended solid recorded at AC2
may due to the influence of shallow water level, and station AC3 (18.1 NTU and
3.5 mg/L), although the contribution from the discharge of unknown connection
at station AC3 was also observed, it is still considered that the exceedances were
project related.
xv.
One (1) limit level exceedance of suspended solid and one (1) limit
level exceedance of turbidity were recorded at Station I on 2 July 2020. A
repeated in-situ measurement has been conducted immediately to confirm the
exceedances. Checking with contractor for the construction activities conducted
on 2 July 2020. Increased the monitoring frequency to daily on 3 July 2020, no
further exceedance was recorded.
Muddy water was observed at monitoring
station I during water quality monitoring. Rock slope excavation, cleaning
concrete surface an mini pile were commenced at RIW3 construction site area
under Contract No.NE/2017/03 on 2 July 2020, however, no surface runoff from
construction works area into the concerned waterbody was observed during
monitoring. Muddy water in colour was observed at station H, upstream reference
station at Ma Yau Tong, turbidity (1220.5 NTU) and suspended solid result (878.0
mg/L) were higher that the result at station I. The weather was rainy from 1 to
2 July 2020, runoff from uncertain sources may affect the water quality at both
stations. In view of the above, it is considered that there were no evidence to
suggest the exceedances were related to project works at RIW3.
xvi.
For the limit level exceedances of turbidity and suspended solid
recorded at Station F on 8 June 2020, a repeated in-situ measurement had been
conducted immediately to confirm the exceedances. Checking with contractor for
the construction activities conducted on 8 June 2020. Increased the monitoring
frequency to daily on 9 June 2020, exceedance was still recorded. Therefore,
monitoring were also conducted on 10 and 11 June 2020 and no exceedances were
recorded.
The weather was rainy from 6 to 8 June
2020 and amber rainstorm warning signal was enforced on 8 June 2020. Silty
water was observed at monitoring station F during water quality monitoring, RC
works, soil nail, ground investigation and demolition of median island were
commenced at RIW2 construction site area under Contractor No.NE/2017/03 on 11
June 2020. Flooding at the site area was observed, silty water was also
observed flowing into the nearby gullies and public drainage, moreover,
discharge from site was observed at Station AC3, the discharge point stated in
discharge license, after heavy rain. Turbidity and suspended solid results were
not high at station AC1 (12.8 NTU and 20.9 mg/L) and station AC2 (8.5 NTU and
13.9 mg/L) but high at station AC3 (110.5 NTU and 268.0 mg/L), although the
contribution from the silty runoff from the construction site at upstream was
also observed it is still considered that the exceedances were project related.
xvii.
For the limit level exceedance of suspended solid recorded at Station F
on 10 June 2020, slightly milky water was observed at monitoring station F
during water quality monitoring. RC works, soil nail, ground investigation and
demolition of median island were commenced at RIW2 construction site area under
Contract No. NE/2017/03 on 10 June 2020, surface runoff was observed leaking
into nearby gullies during monitoring and construction activity from other
construction site involving silty runoff at upstream was observed. Although
turbidity and suspended solid results were also high at station AC1 (10.3 NTU
and 49.1 mg/L), station AC2 (10.9 NTU and 49.5 mg/L) and station AC3 (20.6 NTU
and 28.0 mg/L), it is considered that the exceedances were project related due
to the observation.
Site Inspections and Audit
xviii.
The Environmental Team (ET) conducted weekly site inspections
for the Contract on 3, 10, 17, 24 and 31 July 2020. IEC attended the joint site inspection on 10 July 2020. No non-compliance was found during the
site inspection while reminders on environmental measures were recommended.
xix.
The Environmental Team (ET) conducted biweekly landscape site
inspections for the Contract on 16 and 29 July 2020. No non-compliance was
found during the site inspection while reminders on environmental measures were
recommended.
xx.
The Environmental Team (ET) conducted monthly ecological monitoring for
the Contract on 15 July 2020. No non-compliance was found during the monitoring
while reminders on environmental measures were recommended.
Complaints, Notifications of Summons and Successful
Prosecutions
xxi.
Six environmental complaints were received in this reporting month.
xxii.
The complainant, District Councilor,
reported to AECOM through the hotline dated on 7 July 2020 that the resident
complaint the construction noise generated from the construction site at the
slope of Lin Tak Road was annoying and no mitigation measures for the
construction noise was implemented.
The complaints regarding the
construction noise at Lin Tak Road referred by AECOM was received by ET on 7
July 2020 respectively.
According to the information provided by
the contractor, and also reported in EM&A monthly report, that slope works
using drill and split method were conducted under contract NE/2017/03 at RIW3
of Lin Tak Road starting from August 2019. Based on the observation of recent
monitoring, slope cutting with breaker and driller were the major sources of
the construction noise
Breaking work was observed since 22 June
2020 during the construction noise monitoring recently.
Concurrent construction projects adjacent
to Tseung Kwan O tunnel were another noise source, however, these were
considered a minor impact to Hong Wah Court as those projects were located
further away and the influence was not significant according to the observation
during environmental measurement.
According to the monitoring data in June
2020 after observing the breaking works at station, NMC05 – Yee Hong House of
Hong Wah Court, no noise exceedance was recorded. The breaker was idled every
time during our measurement. However, it was observed operating for the
individual inspection conducted by ET.
The construction activities at Lin Tak
Road, especially for slope cutting works with breaker and driller, were the
major noise nuisance at Lin Tak Road near Hong Wah Court.
Site visits and additional monitoring
were conducted by ET on 7, 8 and 9 July 2020, and it was observed that the
breaker was not operating. Only excavators were observed working.
Site visits have also been conducted by
ET on 10 July 2020. The breaker was observed operating but gaps were observed
on the noise barrier; Moreover, the driller was operating out of the coverage
of noise barrier.
Breaker and driller were observed to be
actively operating on 7 July 2020 in the morning at Lin Tak Road and noise
barriers were in place but not effectively covering the working area especially
for breaker as certain distance was observed between the noise barrier and the
working area.
Remedial action taken according to the
observations by ET:
1. Setting up of noise barriers for the
covering of working area and the plant was observed since 15 June 2020.
2. Quieter breaker, claimed by the
contractor, was observed installed.
3. The plant and working area were
covered by noise barrier most of the time during the monitoring and
inspections.
xxiii.
The complainant, District Councilor,
reported to AECOM through the hotline dated on 18 July 2020 that no water
spraying was carried out by contractor during dusty construction works at the
slope of Lin Tak Road and fugitive dust was observed and cause dust impact to
the complainant’s property.
The complaints regarding the
construction noise at Lin Tak Road referred by AECOM was received by ET on 20
July 2020 respectively.
According to the information provided by
the contractor, and also reported in EM&A monthly report, that slope works
using drill and split method were conducted under contract NE/2017/03 at RIW3
of Lin Tak Road starting from August 2019. Based on the observation of recent
monitoring, slope cutting with breaker and driller were the major sources of
dust emissions.
Breaking work, drilling works, splitting
of rock and loading and unloading of rubble with excavator were observed as the
major construction works at Lin Tak Road
Dust was observed spreading without
mitigation measures was observed on 20 July 2020
According to the monitoring data on 18
July 2020 at air quality monitoring station, LTR_AMS-2 – Environmental
Protection Department’s Restored landfill Site Office, no air exceedance was
recorded.
The construction activities at Lin Tak
Road, especially for slope cutting works with breaker and driller, were the
major construction activities that would generate large amount of dust at Lin
Tak Road near Hong Wah Court.
Site visits were conducted by ET on 20,
21, 22, 23 and 24 July 2020, and no fugitive dust was observed on during the
site visits when the construction works were undergoing.
Remedial action taken according to the
observations by ET:
1. Facilities
for water spraying was observed being setup at the slope of Lin Tak Road.
xxiv.
The complainant, District Councilor,
reported to AECOM through the hotline dated on 18 July 2020 that the resident
of block C complained the construction noise generated from the construction
site at the slope of Lin Tak Road was causing noise nuisance.
The complaint regarding the construction
noise at Lin Tak Road referred by AECOM was received by ET on 20 July 2020.
According to the information provided by
the contractor, and also reported in EM&A monthly report, that slope works
using drill and split method were conducted under contract NE/2017/03 at RIW3
of Lin Tak Road starting from August 2019. Based on the observation of recent
monitoring, slope cutting with breaker and driller were the major sources of
the construction noise
Concurrent construction projects adjacent
to Tseung Kwan O tunnel were another noise source, however, these were
considered a minor impact to Hong Wah Court as those projects were located
further away and the influence was not significant according to the observation
during environmental measurement.
According to the monitoring data in July
2020 after observing the breaking works at station, NMC05 – Yee Hong House of
Hong Wah Court, no noise exceedance was recorded. Although measurement for the
confirmation of exceedances have been conducted twice, no exceedances were
recorded for the second measurement.
Additional noise monitoring had been
conducted by ET on 21, 22 and 24 July 2020 for the complaint investigation and
no exceedances were recorded.
The construction activities at Lin Tak
Road, especially for slope cutting works with breaker and driller, were the
major noise nuisance at Lin Tak Road near Hong Wah Court.
Site visits and additional monitoring
were conducted by ET on 20, 21, 22, 23 and 24 July 2020, and it was observed
that the breaking works was carrying out in intervals. Drilling work was the
most frequent activities observed during site inspections.
Noise barriers were in place covering
the breaker and driller in most of the time.
Remedial action taken according to the
observations by ET:
1. Setting
up of noise barriers for the covering of working area and the plant was
observed since 15 June 2020.
2. Quieter
breaker, claimed by the contractor, was observed installed.
3. The
plant and working area were covered by noise barrier in most of the time during
noise monitoring and site inspections.
4. Sequencing
of works was observed that the driller and breaker were operated alternatively
to avoid concurrent noisy works.
xxv.
The complainant, District Councilor,
reported to AECOM through the hotline dated on 7 July 2020 that the resident
complaint the noise level generated from the construction site at the slope of
Lin Tak Road was annoying and no mitigation measures for the construction noise
was implemented.
The complaints regarding the construction
noise at Lin Tak Road referred by AECOM was received by ET on 7 July 2020
respectively.
According to the information provided by
the contractor, and also reported in EM&A monthly report, that slope works
using drill and split method were conducted under contract NE/2017/03 at RIW3
of Lin Tak Road starting from August 2019. Based on the observation of recent
monitoring, slope cutting with breaker and driller were the major sources of
the construction noise.
Breaking work was observed since 22 June 2020
during the construction noise monitoring recently.
Concurrent construction projects adjacent to
Tseung Kwan O tunnel were another noise source, however, these were considered
a minor impact to Hong Wah Court as those projects were located further away
and the influence was not significant according to the observation during
environmental measurement.
According to the monitoring data in June 2020
after observing the breaking works at station, NMC05 – Yee Hong House of Hong
Wah Court, no noise exceedance was recorded. The breaker was idled every time
during our measurement. However, it was observed operating for the individual
inspection conducted by ET.
The construction activities at Lin Tak Road,
especially for slope cutting works with breaker and driller, were the major
noise nuisance at Lin Tak Road near Hong Wah Court.
Site visits and additional monitoring were
conducted by ET on 7, 8 and 9 July 2020, and it was observed that the breaker
was not operating. Only excavators were observed working.
Site visits have also been conducted by ET on
10 July 2020. The breaker was observed operating but gaps were observed on the
noise barrier; Moreover, the driller was operating out of the coverage of noise
barrier.
Breaker and driller were observed to be
actively operating on 7 July 2020 in the morning at Lin Tak Road and noise
barriers were in place but not effectively covering the working area especially
for breaker as certain distance was observed between the noise barrier and the
working area.
Remedial action taken according to the
observations by ET:
1. Setting
up of noise barriers for the covering of working area and the plant was
observed since 15 June 2020.
2. Quieter
breaker, claimed by the contractor, was observed installed.
3. The
plant and working area were covered by noise barrier most of the time during
the monitoring and inspections.
xxvi.
The complainant, Resident of Hong Wah
Court, reported to AECOM through the hotline dated on 29 July 2020 that the
construction noise generated from the construction site at the slope of Lin Tak
Road was causing noise nuisance to upper level of the building and the phone
call of the complainant was influenced.
The complaint regarding the construction
noise at Lin Tak Road referred by AECOM was received by ET on 30 July 2020.
According to the information provided by
the contractor, and also reported in EM&A monthly report, that slope works
using drill and split method were conducted under contract NE/2017/03 at RIW3
of Lin Tak Road starting from August 2019. Based on the observation of recent
monitoring, slope cutting with breaker and driller were the major sources of
the construction noise.
Concurrent construction projects
adjacent to Tseung Kwan O tunnel were another noise source, however, these were
considered a minor impact to Hong Wah Court as those projects were located
further away and the influence was not significant according to the observation
during environmental measurement.
According to the monitoring data in July
2020 after observing the breaking works at station, NMC05 – Yee Hong House of
Hong Wah Court, no noise exceedance was recorded. Although measurement for the
confirmation of exceedances have been conducted twice, no exceedances were
recorded for the second measurement.
Additional noise monitoring had been
conducted by ET at ground level and also at 34/F of block B on 30 July 2020 and
1 August 2020 for the complaint investigation and no exceedances were recorded.
The construction activities at Lin Tak
Road, especially for slope cutting works with breaker and driller, were the
major noise nuisance at Lin Tak Road near Hong Wah Court.
Site visits were conducted by ET on 30
and 31 July 2020 and 1 August 2020, drilling work, excavators and splitor were
observed as the major activities at that moment.
Noise barriers were in place but the
mitigation measures for reducing noise nuisance to upper level was not enough.
Remedial action taken according to the
observations by ET:
1. Setting
up of noise barriers for the covering of working area and the plant was observed
since 15 June 2020.
2. Quieter
breaker, claimed by the contractor, was observed installed.
3. The
plant and working area were covered by noise barrier in most of the time during
noise monitoring and site inspections.
4. Sequencing
of works was observed that the driller and breaker were operated alternatively
to avoid concurrent noisy works.
Reporting Changes
xxvii.
There are no particular reporting changes.
Future
Key Issues
xxviii.
In
coming reporting 2 months, the scheduled construction activities and the recommended
mitigation measures are listed as follows:
Recommended Mitigation Measures |
|
·
Site formation and temporary soil nail installation at RWC2 Type 1
& 1a and 2; ·
Site formation and temporary soil nail installation for RIW2 Type 6,7 &
8; ·
Gasmain redirection at Slip Road 2; ·
RC base slab construction at KS27; and ·
Construction at FE1 Footing. ·
ELS at Zone 6 & 7; ·
Retaining wall construction for Bay 2 to 8; ·
Removal of Lamp posts and erect temporary lamp posts at Central Median
for later road diversion; ·
Piling construction at CT4; ·
Mini-pile installation works at RWD1; ·
ELS construction for Noise Barrier Footing SE1; ·
Mini-pile and ELS construction at Slope D2; ·
Plate Load Test at Bay 3 of Retaining Wall RWD2 at Slope D2; ·
Construction of Retaining Wall RWD2 at Slope D2; ·
Stage 1 rock excavation at Slope D3; and ·
Retaining wall construction at Slope D3; ·
No-fines concrete construction at Slope D3; ·
Rock-fall Fence (Stage 2) along Lin Tak Road. ·
Watermain works at Sau Mau Ping Road |
·
Dust control during dust generating works; ·
Implementation of proper noise pollution control; and ·
Provision of protection to ensure no runoff out of site area or direct
discharge into public drainage system. |
1.1.1.
Lam Environmental Services Limited (LES) has been appointed to work as
the Environmental Team (ET) under Environmental Permit (EP) no. EP-513/2016 to
implement the Environmental Monitoring and Audit (EM&A) programme as
stipulated in the EM&A Manual of the approved Environmental Impact
Assessment (EIA) Report for Development of Anderson Road Quarry site - Road
Improvement Works (Register No.: AEIAR-195/2016).
1.1.2.
In accordance with Clause 3.4 stated in EP-513/2016, four hard copy and
one electronic copy of the monthly EM&A Report shall be submitted to the
Director within 2 weeks after the end of each reporting month throughout the
entire construction period.
1.1.3.
In accordance with Section 11.3.1 of the Project EM&A Manual, the
first Monthly EM&A Report should be prepared and submitted to EPD within a
month after the major construction works commences with the subsequently
Monthly EM&A Reports due in 10 works day of the end of each reporting
month.
Section 1 Introduction – details the scope and structure of the report.
Section 2 Project
Background – summarizes background and
scope of the project, site description, project organization and contact
details of key personnel during the reporting period.
Section 3 Status of Regulatory Compliance – summarizes the status of valid Environmental Permits /
Licenses during the reporting period.
Section 4 Monitoring
Requirements – summarizes all monitoring
parameters, monitoring methodology and equipment, monitoring locations,
monitoring frequency, criteria and respective event and action plan and
monitoring programmes.
Section 5 Monitoring
Results – summarizes the monitoring
results obtained in the reporting period.
Section 6 Compliance Audit – summarizes
the auditing of monitoring results, all exceedances environmental
parameters.
Section 7 Environmental Site Audit – summarizes the findings of weekly site inspections
undertaken within the reporting period, with a review of any relevant follow-up actions within the reporting period.
Section 8 Complaints,
Notification of summons and Prosecution – summarizes the cumulative statistics on complaints, notification of summons and
prosecution
Section 9 Conclusion
2.1.1.
The Development of Anderson Road Quarry (ARQ) Site is to provide land
and the associated infrastructures for the proposed land uses at the existing
ARQ site at the north-eastern of East Kowloon.
2.1.2.
In addition to the site formation and infrastructure works within the
ARQ site, a new bus-to-bus interchange (BBI) at the toll plaza of Tseung Kwan O
Tunnel and a series of associated off-site road improvement works and
pedestrian connectivity facilities are also proposed to mitigate the potential
cumulative traffic impact arising from the proposed ARQ development.
2.1.3.
The Project under Environmental Permit (EP) (EP No. EP-513/2016) is for
the three associated of-site road improvement works which comprises: (i)
improvement of junction of (J/O) Lin Tak Road / Sau Mau Ping Road (RIW3) (ii)
widening and improvement of sections of Clear Water Bay Road and On Sau Road
(RIW2); and (iii) widening and improvement of sections of New Clear Water Bay
Road and Shun Lee Tsuen Road (RIW1). The location of the Project is shown Figure 2.1.
2.2.1.
The project contains various Schedule 2 Designated Projects (DPs) that,
under the EIAO, require EPs to be granted by the DEP before they may be either
constructed or operated. Table 2.1 summarises the DPs under this
Project.
Table 2.1 Schedule 2 Designated Projects under this
Project
Item |
Designated Project |
EIAO Reference |
DP2
|
A
road which is an expressway, trunk road, primary distributor road or district
distributor road including new roads, and major extensions or improvements to
existing road |
Schedule
2, Part I, A.1 |
2.3.1
Civil Engineering and Development Department is the overall project
controllers for the Project. For the construction phase of the Project, Project
Engineer, Contractor(s), Environmental Team and Independent Environmental
Checker are appointed to manage and control environmental issues.
2.3.2
The proposed project organization and lines of communication with
respect to environmental protection works are shown in Figure 2.2. Key personnel and contact
particulars are summarized in Table 2.2:
Table 2.2 Contact
Details of Key Personnel
Party |
Role |
Post |
Name |
Contact
No. |
Contact
Fax |
AECOM |
Engineer’s
Representative |
Senior
Resident Engineer |
Mr. Brad Chan |
5506 0068 |
2473 3221 |
Chun
Wo – China Metallurgical Group Corporation Joint Venture |
Contractor
|
Site
Agent |
Mr. Chris Lam |
9801 9974 |
3965 9854 |
Environmental
Officer |
Ms. King Lam |
9570 6187 |
|||
Independent Environmental
Checker (IEC) |
Independent Environmental Checker (IEC) |
Mr. Adi Lee |
|||
Environmental Team (ET) |
Environmental Team Leader (ETL) |
Mr. Sam Lam |
6178 3179 |
2882 3331 |
2.4.1 In the reporting month, the
principal work activities conducted are as follow.
Works in Road
Improvement Works 1 (RIW1)
·
Earth works (such as
temporary soil nail, form working platform etc) at RWC2 in-progress; No fine
concrete construction at RWC2 area is in progress;
·
RC works at KS27
subway extension is in progress;
·
RC works at FE1 was
completed;
·
Gasmain laying (by
Towngas company) works is in-progress;
Works in Road Improvement Works 2
(RIW2)
·
Retaining wall
construction, RC works at Slope C3 type 3C was in progress;
·
Preparation works for
RC works at Slope C3 type 3A and 3D were in progress;
·
Socket-H piles work
at CT4 was in-progress;
·
Modify existing
pedestrian crossing facilities and remove existing central median works at at
junction On Sau Road / Clean Water Bay Road and On Sau Road were in-progress;
Works
in Road Improvement Works 3 (RIW3)
·
Mini-pile
construction at RWD1 along Sau Mau Ping Road is in progress.
·
Water-main
works for new Public Toilet at Sau Mau Ping Road is in progress;
·
ELS
works and construction pile cap for temporary platform were in-progress.
·
Rock
excavation works using drill and split method at Slope D3 along Lin Tak Road
was in-progress;
·
Retaining
wall construction at slope crest of Slope D3 was in-progress;
·
No-fines
concrete construction at slope crest of Slope D3 is in progress;
·
Inspection
Pit for UU at Sau Mau Ping Road.
·
Rock-fall
fence for Lin Tak Road (Stage 2) was in-progress.
2.4.2
In coming reporting 2 months, the scheduled construction activities are
listed as follows:
·
Site formation and temporary soil nail installation at RWC2 Type 1 &
1a and 2;
·
Site formation and temporary soil nail installation for RIW2 Type 6,7
& 8;
·
Gasmain redirection at Slip Road 2;
·
RC base slab construction at KS27; and
·
Construction at FE1 Footing.
·
ELS at Zone 6 & 7;
·
Retaining wall construction for Bay 2 to 8;
·
Removal of Lamp posts and erect temporary lamp posts at Central Median
for later road diversion;
·
Piling construction at CT4;
·
Mini-pile installation works at RWD1;
·
ELS construction for Noise Barrier Footing SE1;
·
Mini-pile and ELS construction at Slope D2;
·
Plate Load Test at Bay 3 of Retaining Wall RWD2 at Slope D2;
·
Construction of Retaining Wall RWD2 at Slope D2;
·
Stage 1 rock excavation at Slope D3; and
·
Retaining wall construction at Slope D3;
·
No-fines concrete construction at Slope D3;
·
Rock-fall Fence (Stage 2) along Lin Tak Road.
·
Watermain works at Sau Mau Ping Road
3.1.1.
A summary of the current status on licences and/or permits on
environmental protection pertinent to the Project is shown in Table 3.1.
Table 3.1 Summary of the
current status on licences and/or permits on environmental protection pertinent
to the Project
Permits and/or Licences |
Permit. No. / Account No. |
Valid
From |
Expiry
Date |
Status |
Notification pursuant to
Air Pollution Control (Construction Dust) Regulation |
Form NA submitted to EPD
on 29 May 2018. |
|||
Environmental Permit |
EP-513/2016 |
20 Jul 2016 |
N/A |
Valid |
Construction
Noise Permit (CNP) |
||||
CNP for a section of Sau Mau Ping Road in Area RIW3 for loading /
unloading of construction material |
GW-RE0389-20 |
22 May 2020 |
30 Sep 2020 |
Valid |
Billing Account for Disposal |
||||
Billing
Account for Disposal of Construction Waste |
7031075 |
20
Jul 2018 |
End of the Project |
Valid |
Chemical Waste Registration |
||||
Registration
as a Waste Producer for Sau Mau Ping Road to Lin Tak Road |
5213-294-C4239-04 |
6 Aug 2018 |
N/A |
Valid |
Registration
as a Waste Producer for Sau Mau Ping Area between Him Tat House and Sau Mau
Ping Salt Water Service Reservoir |
5213-293-C4239-05 |
6 Aug 2018 |
N/A |
Valid |
Registration
as a Waste Producer for New Clear Water Bay Road (Start from 46 Clear Water
Bay Road, End at Shun Lee Tsuen Road and San Lee Street |
5213-291-C4239-02 |
13 Aug 2018 |
N/A |
Valid |
Registration
as a Waste Producer for South Part of Hiu Ming Street Playground |
5213-294-C4239-03 |
6 Aug 2018 |
N/A |
Valid |
Registration
as a Waste Producer for Clear Water Bay Road and New Clear Water Bay Road
(From the intersection of Fei Ngo Shan Road to Tai Pan Court) and on Sau Road
(From the intersection of New Clear Water Bay Road to 9 Anderson Road |
5213-831-C4239-08 |
6 Aug 2018 |
N/A |
Valid |
Registration
as a Waste Producer for Sau Mau Ping Area Between Anderson Road and On Sau
Road, next to Oi Tat House |
5213-292-C4239-06 |
6 Aug 2018 |
N/A |
Valid |
Water Discharge Licence |
||||
Water
Pollution Ordinance Licence for Lin Tak Road to Sau Mau Ping Road including
Tseung Kwan O Tunnel Toll Plaza |
WT00032742-2018 |
18
Jan 2019 |
31 Jan 2024 |
Valid |
Water
Pollution Ordinance Licence for Sau Mau Ping Area between Anderson Road and
On Sau Road, next to Oi Tat House |
WT00033223-2019 |
31
Jan 2019 |
31 Jan 2024 |
Valid |
Water
Pollution Ordinance Licence for Sau Mau Ping Area at south part of Hiu Ming
Street playground |
WT00033224-2019 |
21
Mar 2019 |
31 Mar 2024 |
Valid |
Water
Pollution Ordinance Licence for intersection of Fei Ngo Shan Road to Tai Pan
Court and on Sau Road (From the intersection of New Clear Water Bay Road to 9
Anderson Road |
WT00033299-2019 |
5
Mar 2019 |
31 Mar 2024 |
Valid |
Water
Pollution Ordinance Licence for Sau Mau Ping area between Him Tat House and
Sau Mau Ping Salt Water service Reservoir |
WT00033229-2019 |
24 Jun 2019 |
30 Jun 2024 |
Valid |
3.2.1.
A summary of the current status on submission under EP-513/2016 is shown
in Table 3.2.
Table 3.2 Summary of
submission status under EP-513/2016
Submission |
Date of Submission |
|
Condition 1.12 |
Notification
of Commencement Date of Works |
24
September 2018 |
Condition
2.10 |
Management
Organization of Main Construction Companies |
27
September 2018 |
Condition
2.11 |
Submission
of Design Drawing(s) of the Project |
28
September 2018 |
Condition
2.12 |
Submission
of Landscape and Visual Mitigation Plan(s) |
28
September 2018 |
Condition
2.14 (a) and 2.15 |
Submission
of Detailed Vegetation Survey Report (2nd
submission) |
7
December 2018 |
Condition
2.14 (b) and 2.15 |
Submission
of Transplantation Proposal |
7
December 2018 |
Condition
3.3 |
Submission
of Baseline Environmental Monitoring Report (2nd
submission) |
18
December 2018 |
Condition
2.14 (c) |
Transplantation
Completion Report |
3
May 2019 |
Condition
3.4 |
Monthly
EM&A Report (June 2020) |
15 July
2020 |
Noise Monitoring Stations
4.1.1.
The noise monitoring stations for the Project are listed and shown in Table
4.1 and Figure 4.1 & 4.2.
Table 4.1 Noise Monitoring Station
Monitoring Station ID |
Monitoring Location |
Measurement Type |
Level (in terms of no. of floor) |
Kei Shun Special School |
Façade |
G/F |
|
NMC02 |
Shun Lee Disciplined
Services Quarters Block 6 |
Façade |
3/F podium |
NMC03 |
Sienna Garden Block 6 |
Free-field |
G/F |
NMC04 |
Po Tat Estate Tat Kai House |
Free-field |
3/F podium |
NMC05 |
Hong Wah Court Block B Yee
Hong House |
Façade |
G/F |
Noise Monitoring
Parameters, Frequency and Duration
4.1.2.
Noise monitoring shall be carried out at all the designated monitoring
stations. The monitoring frequency shall depend on the scale of the
construction activities. The following is an initial guide on the regular
monitoring frequency for each station on a weekly basis when noise generating
activities are underway:
·
One set of measurements between 0700-1900 hours on
normal weekdays (six consecutive Leq/5min readings);
·
One set of measurements between 1900-2300 hours;
·
One set of measurements between 2300-0700 hours of
next day; and
·
One set of measurements between 0700-2300 hours on
holidays (three consecutive Leq/5min readings).
4.1.3.
For the latter 3 sets of measurements specified in Section 4.1.2 above,
one set of measurements shall at least include 3 consecutive Leq (5min)
results.
4.1.4.
Supplementary information for data auditing, statistical results such as
L10 and L90 shall also be obtained for reference.
4.1.5.
If a school exists near the construction activity, noise monitoring
shall be carried out at the monitoring stations for the schools during the
examination periods. The ET leader shall liaise with the school’s personnel and
the examination authority to ascertain the exact dates and times of all
examination periods during the course of the contract.
Monitoring Equipment
4.1.6.
Noise monitoring was performed
using sound level meter at the
designated monitoring locations.
The sound level meters shall comply with the
International Electrotechnical Commission
Publications 651:1979
(Type
1) and
804:1985 (Type 1)
specifications.
Acoustic calibrator shall
be deployed to check the sound level meters at a known sound pressure level. Brand and model of the equipment is given in Table
4.2.
Table 4.2 Noise
Monitoring Equipment
Equipment |
Brand
and Model |
Series Number |
Integrated
Sound Level Meter |
NTi XL2 |
A2A-15269-EO |
Acoustic Calibrator |
Larson Davis CAL200 |
13437 |
4.1.7. The calibration certificates of the noise monitoring
equipment are attached in Appendix 4.2.
Sampling Procedure and
Monitoring Equipment
4.1.8.
Monitoring Procedure
(a)
The monitoring station shall normally
be at a point 1m from the exterior of the sensitive receiver’s building façade
and be at a position 1.2m above the ground.
(b)
Façade measurements were made at the
monitoring locations. For free-field measurement, a correction factor of +3 dB (A)
would be applied.
(c)
The battery condition was checked to
ensure the correct functioning of the meter.
(d)
Parameters such as frequency weighting,
the time weighting and the measurement time were set as follows:
(e)
Frequency weighting: A, Time weighting:
Fast, Measurement time set: continuous 5 mins
(f)
Prior and after to the noise
measurement, the meter was checked using the acoustic calibrator for 94dB (A)
at 1000 Hz. If the difference in the calibration level before and after
measurement was more than ±1 dB (A), the measurement would be considered
invalid and repeat of noise measurement would be required after re-calibration
or repair of the equipment.
(g)
Noise measurements shall not be made in
fog, rain, wind with a steady speed exceeding 5m/s or wind with gusts exceeding
10m/s. The wind speed shall be checked with a portable wind speed meter capable
of measuring the wind speed in m/s.
4.1.9.
Maintenance and Calibration
(a)
The microphone head of the sound level
meter was cleaned with soft cloth at regular intervals.
(b)
The sound level meter and calibrator
were calibrated at yearly intervals.
EVENT and action plan
4.1.10. Noise Standards for Daytime Construction Activities are
specified under EIAO-TM. The Action and Limit levels for construction noise are
defined in Table 4.3 and Appendix 4.1. Should non-compliance of the
criteria occurs, action in accordance with the Event and Action Plan in Appendix 6.1
shall be carried out.
Table 4.3 Action and
Limit Level for Noise Monitoring
Monitoring Station |
Action Level |
Limit Level (dB(A)) |
||
0700-1900 hrs on normal weekdays |
0700-2300 hrs on holidays (including Sundays); and
1900-2300 hrs on all days 2 |
2300-0700 hrs of all days 2 |
||
NMC01 |
When one documented complaint is received |
65 / 70 1 |
60 / 65 / 70 3 |
45 / 50 / 55 3 |
NMC02 |
75 |
|||
NMC03 |
75 |
|||
NMC04 |
75 |
|||
NMC05 |
75 |
Remark 1: Limit level of NMC01 - Kei Shun Special School reduce to 65 dB
(A) during examination periods if any.
Remark 2: Construction noise during restricted hours is under the
control of Noise Control Ordinance Limit Level to be selected based on Area
Sensitivity Rating.
Remark 3: Limit Level for restricted hour monitoring shall act as
reference level only. Investigation would be conducted on CNP compliance if
exceedance recorded during restricted hour noise monitoring period.
Air Quality Monitoring
Stations
4.2.1.
The air monitoring stations for the Project are listed and shown in Table
4.4 and Figure 4.3 & 4.4.
Table 4.4 Air Monitoring
Station
Monitoring
Station ID |
Monitoring Location |
Level (in terms of no. of floor) |
NCWBR_AMS-1 |
Shun Lee Fire Station |
2/F Roof |
NCWBR_AMS-2 |
Shun Lee Estate Lee
Hang House |
G/F |
NCWBR_AMS-3 |
Shun Lee Disciplined
Services Quarters (Block 6) |
4/F podium |
NCWBR_AMS-4 |
Sienna Garden |
G/F |
NCWBR_AMS-5 |
Shun Chi Court Shun
Fung House |
Roof |
LTR_AMS-1 |
St Edward's Catholic
Primary School |
G/F |
LTR_AMS-2 |
Environmental
Protection Department's Restored Landfill Site Office |
G/F |
LTR_AMS-3 |
Po Tat Estate Tat Kai
House |
3/F podium |
Air Monitoring Parameters,
Frequency and Duration
4.2.2.
One-hour TSP levels should be measured to indicate the impacts of
construction dust on air quality.
4.2.3.
The sampling frequency of at least three times in every six-days should
be undertaken when the highest dust impact occurs.
Sampling Procedure and
Monitoring Equipment
4.2.4.
Monitoring Procedures
(a)
Check the calibration period of
portable direct reading dust meter prior to monitoring (The direct reading dust
meter was calibrated at 2-years interval and checked with High Volume Sampler
(HVS) yearly.)
(b)
Record the site condition near / around
the monitoring stations.
(c)
Install the portable direct reading
dust meter to the monitoring location.
(d)
Slide the power switch to turn the
power on.
(e)
Check of portable direct reading dust
meter to ensure the equipment operation in normal condition.
(f)
Select the period of measurement to
60mins.
(g)
Check and set the correct time.
(h)
Select the appropriate unit display for
the equipment.
(i)
Slide the power switch to turn the
power off when the monitoring period ended (3 times 1 hour TSP monitoring per
day).
(j)
Uninstall the portable direct reading
dust meter
(k)
Collected the sampled data for
analysis.
(l)
Remark: Procedures (c) to (h) may be
different subject to the brands and models of portable direct reading dust meter
4.2.5.
Maintenance and Calibration
(a)
The direct reading dust meter was
calibrated at 2-years interval and checked with High Volume Sampler (HVS)
yearly to determine the accuracy and validity of the results measured.
(b)
Checking of direct reading dust meter will
be carried out in order to determine the conversion factor between the direct
reading dust meter and the standard equipment, HVS. The comparison check is to
be considered valid based on correlation coefficient checked by HOKLAS
laboratory.
4.2.6.
The 1-hour TSP air quality monitoring was performed by using portable
direct reading dust meters at each designated monitoring station. The brand and
model of the equipment are given in Table
4.5.
Table 4.5 Air Quality
Monitoring Equipment
Equipment |
Brand
and model |
Series
Number |
Portable
direct reading dust meter |
Met One
BT- 645 |
X19295 X19297 R22586 |
Met One
AEROCET 831 |
W15448 W15449 W16848 Y23153 Y23154 Y23160 |
4.2.7.
The calibration certificates of the air quality monitoring equipment are
attached in Appendix 4.2.
Wind Data
4.2.8.
The representative wind data from Tate’s Cairn HKO Automatic Weather
Station and Tseung Kwan O HKO Automatic Weather Station were obtained covering
the 1-hr TSP monitoring periods. The wind data were extracted and shown in Appendix 4.3.
EVENT and action plan
4.2.9.
The Action and Limit levels for construction air quality are defined in Table 4.6 and Appendix
4.1. Should non-compliance of the air quality criteria occur, action in
accordance with the Event and Action Plan in Appendix
6.1 shall be carried out.
Table 4.6 Action and
Limit Level for Air Quality Monitoring
Monitoring
Locations |
1-hour TSP Level in
μg/m3 |
|
Action Level |
Limit Level |
|
NCWBR_AMS-1 |
284.4 |
500.0 |
NCWBR_AMS-2 |
282.4 |
500.0 |
NCWBR_AMS-3 |
287.9 |
500.0 |
NCWBR_AMS-4 |
281.6 |
500.0 |
NCWBR_AMS-5 |
270.0 |
500.0 |
LTR_AMS-1 |
272.1 |
500.0 |
LTR_AMS-2 |
281.1 |
500.0 |
LTR_AMS-3 |
285.1 |
500.0 |
WATER QUALITY MONITORING STATIONS
4.3.1.
Water quality monitoring was undertaken at 7 monitoring stations in the
reporting month. The proposed water quality monitoring stations of the Project
are shown in Table 4.7 and Figure 4.5 & 4.6.
Table 4.7 Marine Water Quality Stations for Water
Quality Monitoring
Inland Water |
Stations |
Description |
Easting |
Northing |
Channelized nullah across the Project site |
E |
Upstream Control Station |
841329 |
821753 |
F |
Downstream Impact Station |
841469 |
821635 |
|
AC1 |
Upstream Reference Station |
- |
- |
|
AC2 |
Upstream Reference Station |
- |
- |
|
AC3 |
Upstream Reference Station |
- |
- |
|
Ma Yau Tong Stream |
H |
Upstream Control Station |
843008 |
819880 |
I |
Downstream Impact Station |
842652 |
819573 |
Water Quality Parameters,
Frequency and Duration
4.3.2.
The levels of dissolved oxygen (DO), turbidity and pH shall be measured
in situ while suspended solids (SS) is determined by laboratory analysis at all
the designated monitoring stations.
4.3.3.
In association with the water quality parameters, other relevant data
shall also be recorded, such as monitoring location / position, time, water
temperature, salinity, DO saturation, weather conditions, and any special
phenomena underway near the monitoring station.
4.3.4.
The sampling frequency of at least three days per week should be
undertaken when the highest dust impact occurs. Upon completion of the
construction works, the monitoring exercise at the designated monitoring
locations should be continued for four weeks in the same manner as the impact
monitoring.
4.3.5.
The interval between two sets of monitoring should not be less than 36
hours except where there are exceedances of Action and/or Limit Levels, in which
case the monitoring frequency will be increased.
4.3.6.
Replicate in-situ measurements should be carried out in each sampling
event.
Sampling Procedures and
Monitoring Equipment
Dissolved Oxygen And Temperature Measuring
Equipment
4.3.7.
The instrument should be a portable, weatherproof dissolved oxygen
measuring instrument complete with cable, sensor, comprehensive operation
manuals, and use a DC power source. It should be capable of measuring:
·
a
dissolved oxygen level in the range of 0-20 mg/l and 0-200% saturation
·
a
temperature of 0-45 degree Celsius
4.3.8.
It should have a membrane electrode with automatic temperature
compensation complete with a cable. Sufficient stocks of spare electrodes and
cables should be available for replacement where necessary. (e.g. YSI model 59
meter, YSI 5739 probe, YSI 5795A submersible stirrer with reel and cable or an
approved similar instrument).
4.3.9.
Should salinity compensation not be build-in in the DO equipment,
in-situ salinity shall be measured to calibrate the DO equipment prior to each
DO measurement.
Turbidity Measurement Instrument
4.3.10.
The instrument should be a portable, weatherproof turbidity-measuring
instrument complete with comprehensive operation manual. The equipment should
use a DC power source. It should have a photoelectric sensor capable of
measuring turbidity between 0‑1000 NTU and be complete with a cable (e.g. Hach
model 2100P or an approved similar instrument).
Sampler
4.3.11. Due to low water level as mentioned
in Section 6.4.3 of the EIA report, bucket sampler (Approximate 1L) will be use
instead of water sampler in order to obtain surface water sample without
disturb the stream sediment and collect representative results.
Salinity
4.3.12.
A portable salinometer capable of measuring salinity in the range of 0-70
ppt shall be provided for measuring salinity of the water at each of monitoring
location.
Monitoring Methodology
4.3.13.
Monitoring Procedure
(a)
The condition near the monitoring
stations shall be observed and recorded on the data log sheet.
(b)
Check of sensors and electrodes with
certified standard solutions before each use.
(c)
Wet bulb calibration for a DO meter
should be carried out before measurement.
(d)
Sample would be taken using bucket
sampler at surface level.
(e)
Transfer the sampled water carefully
into cleaned water bottles (2x 1000ml) provided by the laboratory at the spot
after the collection of the water sample for the subsequent laboratory
Suspended Solid testing.
(f)
Transfer the sampled water from the
bucket sampler to the rinsed water container for in-situ measurement (In case
of the in-situ measurement cannot be carried at spot due to safety and adverse
weather condition, sampled water from the bucket sampler will be transfer to
cleaned water bottles provided by laboratory. Then, In-situ measurement will be
conducted at a safe location which sampled water inside cleaned water bottle
will be transfer to the rinsed water container for in-situ measurement) In-situ
measurement shall be measured in duplicate.
(g)
Parameters including Water Temperature
(℃), pH (units), Salinity (ppt), DO (mg/L), DO saturation (%) will be measured
by the Multifunctional Meter and Turbidity (NTU) will be measured by turbid
meter. (Water Temperature and Salinity will be measured as reference
parameters)
(h)
Record the result on the data log sheet
and record any special finding during / after in-situ measurement.
(i)
The water sample bottles will be stored
in a cool box (at cooled to 4℃ without being frozen), which shall be delivered
to HOKLAS laboratory (ALS Technichem (HK) Pty Ltd) for further testing to
determine the level of SS.
4.3.14.
Maintenance and Calibration
(a)
The responses of sensors and electrodes
of the water quality monitoring equipment were cleaned and checked at regular
intervals.
(b)
DO meter (Multifunctional Meter) and
turbid meter was certified by a laboratory accredited under HOKLAS or any other
international accreditation scheme, and subsequently re-calibrated at three
monthly intervals.
4.3.15.
Brand and model of the equipment are given in Table 4.8.
Table 4.8 Water Quality Monitoring Equipment
Equipment |
Brand and model |
Series Number |
Multifunctional Meter |
YSI
Professional Plus |
16J100298 17F100236 19H100656 |
Turbid meter |
Xin Rui WGZ-3B |
1807079 1807069 |
4.3.16.
The calibration certificates of the water quality monitoring equipment
are attached in Appendix 4.2.
Laboratory Measurement /
Analysis
4.3.17.
Analysis of suspended solids has been carried out in a HOKLAS accredited
laboratory, which is ALS Technichem (HK) Pty Ltd.
EVENT and action plan
4.3.18.
The Action and Limit levels for construction water quality are defined
in Table 4.9 and Appendix 4.1.
Should the monitoring results of the water quality parameters at any designated
monitoring station exceed the water quality criteria, action in accordance with
the Event and Action Plan in Appendix 6.1
shall be carried out.
Table 4.9 Action and
Limit Level for Water Quality Monitoring
Monitoring Station |
Surface pH |
Surface DO (mg/L) |
Surface Turbidity (NTU) |
Surface SS (mg/L) |
||||
Action Level |
Limit Level |
Action Level |
Limit Level |
Action Level |
Limit Level |
Action Level |
Limit Level |
|
E |
- |
- |
- |
- |
- |
- |
- |
- |
F |
Beyond
the range of 6.6-8.4 |
Beyond
the range of 6.5-8.5 |
5.8 |
5.5 |
24.4 |
32.7 |
17.0 |
23.8 |
AC1 |
- |
- |
- |
- |
- |
- |
- |
- |
AC2 |
- |
- |
- |
- |
- |
- |
- |
- |
AC3 |
- |
- |
- |
- |
- |
- |
- |
- |
H |
- |
- |
- |
- |
- |
- |
- |
- |
I |
Beyond
the range of 6.6-8.4 |
Beyond
the range of 6.5-8.5 |
5.5 |
5.4 |
206.9 |
214.2 |
172.8 |
201.4 |
*Remarks:
The value of
1.0mg/L was taken as the value for measurement with suspended solid level of
<1.0mg/L for Action and Limit level calculation.
It is
recommended that upstream monitoring station (monitoring station E, AC1, AC2,
AC3 and H) would be taken as control reference for exceedance investigation
only. Action and limit level would not be establish using the baseline data.
5.0.1
The environmental monitoring
will be implemented based on the division of works areas of each designed
projects. Overall layout showing work areas and monitoring stations is shown in
Figure 2.1 and Figure 4.1
– 4.6 respectively.
5.0.2
The environment monitoring
schedules for reporting month and coming month are presented in Appendix 5.1.
5.1.1
Ad- hoc noise monitoring for
NMC05 was conducted on 2, 9, 16, 23 and 30 July 2020.
5.1.2
No action or limit level
exceedance was recorded during this reporting period.
5.1.3
For the limit level exceedance
recorded at NMC05 on 11 June 2020, repeat measurement was conducted to confirm
result and reviewed the trend of noise measurement. Analysis of contractor’s
working procedure. Additional monitoring was conducted on 12 June 2020 and
exceedance of limit level was still recorded, 81 dB(A), therefore, follow-up
monitoring has been conducted on 12 June 2020 and no further exceedance was
recorded.
Rock slope excavation works, mini pile and ELS at RIW3 were conducted
under Contract NE/2017/03 around the concerned location during the time of
measurement. The drilling works at Lin Tak Road was identified as the major
noise source causing the exceedance by the observation during measurement on 11
June 2020. The working area of the driller was not covering by noise barrier or
other mitigation measures for minimising the construction noise. As such, the
exceedance was considered as project related
5.1.4
Noise monitoring results
measured in this reporting period are reviewed and summarized. Details of noise
monitoring results and graphical presentation can be referred in Appendix 5.2.
5.2.1
All 1-hour TSP monitoring was
conducted as scheduled in the reporting month.
5.2.2
No action or limit level
exceedance was recorded in the reporting period.
5.2.3
Air quality monitoring results
measured in this reporting period are reviewed and summarized. Details of air monitoring results and
graphical presentation can be referred in Appendix 5.3.
5.2.4
No water can be collected at
Station AC1 during this reporting period as the station was dried out during
the monitoring scheduled in the reporting month.
5.2.5
No water can be collected at
Station AC2 on 24, 27 and 29 July 2020 as the station was dried out during the
monitoring scheduled in the reporting month.
5.2.6
No water can be collected at
Station AC3 on 31 July 2020 as the station was dried out during the monitoring
scheduled in the reporting month.
5.2.7
No water can be collected at
Station E on 4, 6, 8, 10, 13, 15, 17, 20, 22, 24, 27, 29 and 31 July 2020 as
the station was dried out during the monitoring scheduled in the reporting
month.
5.2.8
One (1) limit level exceedance
of suspended solid and one (1) limit level exceedance of turbidity were
recorded at Station F on 2 July 2020. A repeated in-situ measurement has been
conducted immediately to confirm the exceedances. Checking with contractor for
the construction activities conducted on 2 July 2020. Increased the monitoring
frequency to daily on 3 July 2020, no further exceedance was recorded.
The weather was rainy from 1 to 2 July
2020. Milky water was observed at monitoring station F during water quality
monitoring. RC works and demolition of median island were commenced at RIW2
construction site area under Contract No. NE/2017/03 on 2 July 2020. Silty
water was observed flowing into the nearby public drainage. Turbidity and
suspended solid results were not high at Station E (18.2 NTU and 15.4 mg/L),
station AC2 (12.5 NTU and 67.7 mg/L), the high suspended solid recorded at AC2
may due to the influence of shallow water level, and station AC3 (18.1 NTU and
3.5 mg/L), although the contribution from the discharge of unknown connection
at station AC3 was also observed, it is still considered that the exceedances were
project related.
5.2.9
One (1) limit level exceedance
of suspended solid and one (1) limit level exceedance of turbidity were
recorded at Station I on 2 July 2020. A repeated in-situ measurement has been
conducted immediately to confirm the exceedances. Checking with contractor for
the construction activities conducted on 2 July 2020. Increased the monitoring
frequency to daily on 3 July 2020, no further exceedance was recorded.
Muddy water was observed at monitoring
station I during water quality monitoring. Rock slope excavation, cleaning
concrete surface an mini pile were commenced at RIW3 construction site area
under Contract No.NE/2017/03 on 2 July 2020, however, no surface runoff from
construction works area into the concerned waterbody was observed during
monitoring. Muddy water in colour was observed at station H, upstream reference
station at Ma Yau Tong, turbidity (1220.5 NTU) and suspended solid result
(878.0 mg/L) were higher that the result at station I. The weather was rainy
from 1 to 2 July 2020, runoff from uncertain sources may affect the water
quality at both stations. In view of the above, it is considered that there
were no evidence to suggest the exceedances were related to project
works at RIW3.
5.2.10
For the limit level exceedances of turbidity and suspended solid
recorded at Station F on 8 June 2020, a repeated in-situ measurement had been
conducted immediately to confirm the exceedances. Checking with contractor for
the construction activities conducted on 8 June 2020. Increased the monitoring
frequency to daily on 9 June 2020, exceedance was still recorded. Therefore,
monitoring were also conducted on 10 and 11 June 2020 and no exceedances were
recorded.
The weather was rainy from 6 to 8 June
2020 and amber rainstorm warning signal was enforced on 8 June 2020. Silty
water was observed at monitoring station F during water quality monitoring, RC
works, soil nail, ground investigation and demolition of median island were
commenced at RIW2 construction site area under Contractor No.NE/2017/03 on 11
June 2020. Flooding at the site area was observed, silty water was also
observed flowing into the nearby gullies and public drainage, moreover,
discharge from site was observed at Station AC3, the discharge point stated in
discharge license, after heavy rain. Turbidity and suspended solid results were
not high at station AC1 (12.8 NTU and 20.9 mg/L) and station AC2 (8.5 NTU and
13.9 mg/L) but high at station AC3 (110.5 NTU and 268.0 mg/L), although the
contribution from the silty runoff from the construction site at upstream was
also observed it is still considered that the exceedances were project related.
5.2.11
For the limit level exceedance of suspended solid recorded at Station F
on 10 June 2020, slightly milky water was observed at monitoring station F
during water quality monitoring. RC works, soil nail, ground investigation and
demolition of median island were commenced at RIW2 construction site area under
Contract No. NE/2017/03 on 10 June 2020, surface runoff was observed leaking
into nearby gullies during monitoring and construction activity from other
construction site involving silty runoff at upstream was observed. Although
turbidity and suspended solid results were also high at station AC1 (10.3 NTU
and 49.1 mg/L), station AC2 (10.9 NTU and 49.5 mg/L) and station AC3 (20.6 NTU
and 28.0 mg/L), it is considered that the exceedances were project related due
to the observation.
5.3.1
Water quality monitoring results measured in this reporting period are
reviewed and summarized. Details of water quality monitoring results and
graphical presentation can be referred in Appendix 5.4.
5.4.1
The quantities of waste for disposal in the Reporting Period are
summarized in Table 5.1 and Table 5.2. The Monthly Summary Waste
Flow Table is shown in Appendix 5.5. Whenever possible, materials were
reused on-site as far as practicable.
Table 5.1 Summary of Quantities of Inert C&D Materials
Waste Type |
Quantity (this month) |
Quantity (Project commencement to the end of last month) |
Cumulative
Quantity-to-Date |
Disposal Location |
Hard Rock and Large Broken Concrete (Inert) (in ‘000m3) |
0 |
0 |
0 |
Nil |
Reused in this Contract (Inert) (in ‘000m3) |
0.938 |
0.91 |
1.848 |
Nil |
Reused in other Projects (Inert) (in ‘000m3) |
1.575 |
12.715 |
14.29 |
Nil |
Disposal as Public Fill (Inert) (in ‘000m3) |
1.169 |
36.60 |
37.769 |
TKO137 |
Table 5.2 Summary of Quantities of C&D Wastes
Waste Type |
Quantity (this month) |
Quantity (Project
commencement to the end of last month) |
Cumulative
Quantity-to-Date |
Disposal Location |
Metals (in ‘000kg) |
0 |
0.143 |
0.143 |
Nil (waste recycle was arranged) |
Paper / Cardboard Packing (in ‘000kg) |
0 |
3.094 |
3.094 |
Nil (waste recycle was arranged) |
Plastics (in ‘000kg) |
0 |
3.751 |
3.751 |
Nil (waste
recycle was arranged) |
Chemical Wastes (in ‘000kg) |
0 |
1 |
1 |
Nil |
General Refuses (in ‘000m3) |
0.011 |
0.573 |
0.584 |
SENT |
6.0.1.
The Event Action Plan for construction noise, air quality and water
quality are presented in Appendix 6.1.
6.0.2.
The summary of exceedance is presented in Appendix 6.2.
6.1.1 No action or limit level exceedance was
recorded during this reporting period.
6.2.1
No action or limit level exceedance was recorded in the reporting
period.
6.3.2
No water can be collected at Station AC2 on 24, 27 and 29 July 2020 as
the station was dried out during the monitoring scheduled in the reporting
month.
6.3.3
No water can be collected at Station AC3 on 31 July 2020 as the station
was dried out during the monitoring scheduled in the reporting month.
6.3.4
No water can be collected at Station E on 4, 6, 8, 10, 13, 15, 17, 20,
22, 24, 27, 29 and 31 July 2020 as the station was dried out during the
monitoring scheduled in the reporting month.
6.3.5
One (1) limit level exceedance of suspended solid and one (1) limit
level exceedance of turbidity were recorded at Station F on 2 July 2020. After
investigation, the exceedances were considered project related.
6.3.6
One (1) limit level exceedance of suspended solid and one (1) limit
level exceedance of turbidity were recorded at Station I on 2 July 2020. After
investigation, the exceedances were considered project related.
6.4.1
No environmental non-compliance was recorded in the reporting month.
6.5.1
There was no particular action taken since no non-compliance was
recorded in the reporting period.
7.0.1.
Within this reporting month, weekly environmental site audits were
conducted on 3, 10, 17, 24 and 31 July 2020. IEC attended the joint site
inspection on 10 July
2020.
7.0.2. No non-compliance was found during
the site inspection while reminders on environmental measures were recommended.
Results and
findings of these inspections in this reporting month are listed below in Table 7.1.
Table 7.1 Summary of
Environmental Inspections
Date |
Item |
Reminder(s)/ Observation(s) |
Action taken by Contractor |
Outcome |
17 Jul 2020 |
20200717_1 |
The slope should be covered well
by tarpaulin sheet. (RIW2) |
The slope has been covered as much
as possible |
Item was rectified on 29 July 2020 |
17 Jul 2020 |
20200717_2 |
The silty
surface runoff should be cleared (RIW2) |
The
surface runoff was not observed |
Item was rectified on 29 July 2020 |
17 Jul 2020 |
20200717_3 |
The debris
should be cleared regularly. (RIW2) |
Pending |
Pending |
24 Jul 2020 |
20200724_1 |
The
temporary drainage system at D2 slope need to be reviewed. (RIW3) |
Pending |
Pending |
24 Jul 2020 |
20200724_2 |
The working
frequency of driller should be adjusted if there were any constraints in
erecting noise barrier. (RIW3) |
The
driller was observed working behind the noise barrier. |
Item was rectified on 27 July 2020 |
31 Jul 2020 |
20200731_1 |
The
gullies should be well protected to avoid silty material flowing in. (RIW2) |
Pending |
Pending |
31 Jul 2020 |
20200731_2 |
The
chemical containers should be stored well to prevent the leakage
contaminating the surroundings. (RIW2) |
Pending |
Pending |
31 Jul 2020 |
20200731_3 |
The pipe for unknown purpose
should be removed from the public drainage. (RIW2) |
Pending |
Pending |
7.0.3.
Within this reporting month, biweekly landscape site audits were
conducted on 15 and 29 July 2020.
7.0.4.
No non-compliance was found during the landscape site inspection.
Results and findings
of these inspections in this reporting month are listed below in Table 7.2.
Table 7.2 Summary of
Landscape site inspections
Date |
Item |
Reminder(s)/ Observation(s) |
Action taken by
Contractor |
Outcome |
15 Jul 2020 |
20200715_1 |
Mikania sp. Was observed on
R-T01389(T) |
The mikania sp. Has ben removed. |
Completed as observed on 29 July
2020 |
15 Jul 2020 |
20200715_2 |
Weeding in
the nursery is recommended |
Weeding
has been done. |
Completed as observed on 29 July
2020 |
15 Jul 2020 |
20200715_3 |
Remove the
gravel in nursery is recommended |
Condition
has been improved. |
Completed as observed on 29 July
2020 |
15 Jul 2020 |
20200715_4 |
Setup a
proper staking system is recommended |
Staking
has been repaired. |
Completed as observed on 29 July
2020 |
29 Jul 2020 |
20200729_1 |
Removal of
refuse in tree protection zone is recommended |
Pending |
Pending |
7.0.5.
Within this reporting month, monthly ecological monitoring was conducted
on 15 July 2020.
7.0.6.
No non-compliance was found during the ecological monitoring. Results
and finding of the inspection in this reporting month is listed below in Table
7.3
Table 7.3 Summary of
Ecological Monitoring
Date |
Item |
Reminder(s)/ Observation(s) |
Action taken by Contractor |
Outcome |
15 July 2020 |
20200715_1 |
Minor pest disease was still
observed. Apply of appropriate pesticide
is recommended. |
Pending |
Pending |
8.0.1.
Five environmental complaints were received in this reporting month.
8.0.2.
The complainant, District Councilor, reported to AECOM through the
hotline dated on 7 July 2020 that the resident complaint the construction noise
generated from the construction site at the slope of Lin Tak Road was annoying
and no mitigation measures for the construction noise was implemented.
The complaints regarding the
construction noise at Lin Tak Road referred by AECOM was received by ET on 7
July 2020 respectively.
According to the information provided by
the contractor, and also reported in EM&A monthly report, that slope works
using drill and split method were conducted under contract NE/2017/03 at RIW3
of Lin Tak Road starting from August 2019. Based on the observation of recent
monitoring, slope cutting with breaker and driller were the major sources of
the construction noise
Breaking work was observed since 22 June
2020 during the construction noise monitoring recently.
Concurrent construction projects
adjacent to Tseung Kwan O tunnel were another noise source, however, these were
considered a minor impact to Hong Wah Court as those projects were located
further away and the influence was not significant according to the observation
during environmental measurement.
According to the monitoring data in June
2020 after observing the breaking works at station, NMC05 – Yee Hong House of
Hong Wah Court, no noise exceedance was recorded. The breaker was idled every
time during our measurement. However, it was observed operating for the
individual inspection conducted by ET.
The construction activities at Lin Tak
Road, especially for slope cutting works with breaker and driller, were the
major noise nuisance at Lin Tak Road near Hong Wah Court.
Site visits and additional monitoring
were conducted by ET on 7, 8 and 9 July 2020, and it was observed that the
breaker was not operating. Only excavators were observed working.
Site visits have also been conducted by
ET on 10 July 2020. The breaker was observed operating but gaps were observed
on the noise barrier; Moreover, the driller was operating out of the coverage
of noise barrier.
Breaker and driller were observed to be
actively operating on 7 July 2020 in the morning at Lin Tak Road and noise
barriers were in place but not effectively covering the working area especially
for breaker as certain distance was observed between the noise barrier and the
working area.
Remedial action taken according to the
observations by ET:
1. Setting up of noise barriers for the
covering of working area and the plant was observed since 15 June 2020.
2. Quieter breaker, claimed by the
contractor, was observed installed.
3. The plant and working area were covered
by noise barrier most of the time during the monitoring and inspections.
8.0.3.
The complainant, District Councilor, reported to AECOM through the
hotline dated on 18 July 2020 that no water spraying was carried out by
contractor during dusty construction works at the slope of Lin Tak Road and
fugitive dust was observed and cause dust impact to the complainant’s property.
The complaints regarding the
construction noise at Lin Tak Road referred by AECOM was received by ET on 20
July 2020 respectively.
According to the information provided by
the contractor, and also reported in EM&A monthly report, that slope works
using drill and split method were conducted under contract NE/2017/03 at RIW3
of Lin Tak Road starting from August 2019. Based on the observation of recent
monitoring, slope cutting with breaker and driller were the major sources of
dust emissions.
Breaking work, drilling works, splitting
of rock and loading and unloading of rubble with excavator were observed as the
major construction works at Lin Tak Road
Dust was observed spreading without
mitigation measures was observed on 20 July 2020
According to the monitoring data on 18
July 2020 at air quality monitoring station, LTR_AMS-2 – Environmental
Protection Department’s Restored landfill Site Office, no air exceedance was
recorded.
The construction activities at Lin Tak
Road, especially for slope cutting works with breaker and driller, were the
major construction activities that would generate large amount of dust at Lin
Tak Road near Hong Wah Court.
Site visits were conducted by ET on 20,
21, 22, 23 and 24 July 2020, and no fugitive dust was observed on during the
site visits when the construction works were undergoing.
Remedial action taken according to the
observations by ET:
1. Facilities
for water spraying was observed being setup at the slope of Lin Tak Road.
The complainant, District Councilor,
reported to AECOM through the hotline dated on 18 July 2020 that the resident
of block C complained the construction noise generated from the construction
site at the slope of Lin Tak Road was causing noise nuisance.
The complaint regarding the construction
noise at Lin Tak Road referred by AECOM was received by ET on 20 July 2020.
According to the information provided by
the contractor, and also reported in EM&A monthly report, that slope works
using drill and split method were conducted under contract NE/2017/03 at RIW3
of Lin Tak Road starting from August 2019. Based on the observation of recent
monitoring, slope cutting with breaker and driller were the major sources of
the construction noise
Concurrent construction projects
adjacent to Tseung Kwan O tunnel were another noise source, however, these were
considered a minor impact to Hong Wah Court as those projects were located
further away and the influence was not significant according to the observation
during environmental measurement.
According to the monitoring data in July
2020 after observing the breaking works at station, NMC05 – Yee Hong House of
Hong Wah Court, no noise exceedance was recorded. Although measurement for the
confirmation of exceedances have been conducted twice, no exceedances were
recorded for the second measurement.
Additional noise monitoring had been
conducted by ET on 21, 22 and 24 July 2020 for the complaint investigation and
no exceedances were recorded.
The construction activities at Lin Tak
Road, especially for slope cutting works with breaker and driller, were the
major noise nuisance at Lin Tak Road near Hong Wah Court.
Site visits and additional monitoring
were conducted by ET on 20, 21, 22, 23 and 24 July 2020, and it was observed
that the breaking works was carrying out in intervals. Drilling work was the
most frequent activities observed during site inspections.
Noise barriers were in place covering
the breaker and driller in most of the time.
Remedial action taken according to the
observations by ET:
1. Setting
up of noise barriers for the covering of working area and the plant was
observed since 15 June 2020.
2. Quieter
breaker, claimed by the contractor, was observed installed.
3. The
plant and working area were covered by noise barrier in most of the time during
noise monitoring and site inspections.
4. Sequencing
of works was observed that the driller and breaker were operated alternatively
to avoid concurrent noisy works.
8.0.4.
The complainant, District Councilor, reported to AECOM through the
hotline dated on 7 July 2020 that the resident complaint the noise level
generated from the construction site at the slope of Lin Tak Road was annoying
and no mitigation measures for the construction noise was implemented.
The complaints regarding the
construction noise at Lin Tak Road referred by AECOM was received by ET on 7
July 2020 respectively.
According to the information provided by
the contractor, and also reported in EM&A monthly report, that slope works
using drill and split method were conducted under contract NE/2017/03 at RIW3
of Lin Tak Road starting from August 2019. Based on the observation of recent
monitoring, slope cutting with breaker and driller were the major sources of
the construction noise.
Breaking work was observed since 22 June
2020 during the construction noise monitoring recently.
Concurrent construction projects
adjacent to Tseung Kwan O tunnel were another noise source, however, these were
considered a minor impact to Hong Wah Court as those projects were located
further away and the influence was not significant according to the observation
during environmental measurement.
According to the monitoring data in June
2020 after observing the breaking works at station, NMC05 – Yee Hong House of
Hong Wah Court, no noise exceedance was recorded. The breaker was idled every
time during our measurement. However, it was observed operating for the
individual inspection conducted by ET.
The construction activities at Lin Tak
Road, especially for slope cutting works with breaker and driller, were the
major noise nuisance at Lin Tak Road near Hong Wah Court.
Site visits and additional monitoring
were conducted by ET on 7, 8 and 9 July 2020, and it was observed that the
breaker was not operating. Only excavators were observed working.
Site visits have also been conducted by
ET on 10 July 2020. The breaker was observed operating but gaps were observed
on the noise barrier; Moreover, the driller was operating out of the coverage
of noise barrier.
Breaker and driller were observed to be
actively operating on 7 July 2020 in the morning at Lin Tak Road and noise
barriers were in place but not effectively covering the working area especially
for breaker as certain distance was observed between the noise barrier and the
working area.
Remedial action taken according to the
observations by ET:
1. Setting
up of noise barriers for the covering of working area and the plant was
observed since 15 June 2020.
2. Quieter
breaker, claimed by the contractor, was observed installed.
3. The
plant and working area were covered by noise barrier most of the time during
the monitoring and inspections.
8.0.5. The
complainant, Resident of Hong Wah Court, reported to AECOM through the hotline dated
on 29 July 2020 that the construction noise generated from the construction
site at the slope of Lin Tak Road was causing noise nuisance to upper level of
the building and the phone call of the complainant was influenced.
The
complaint regarding the construction noise at Lin Tak Road referred by AECOM
was received by ET on 30 July 2020.
According
to the information provided by the contractor, and also reported in EM&A
monthly report, that slope works using drill and split method were conducted
under contract NE/2017/03 at RIW3 of Lin Tak Road starting from August 2019.
Based on the observation of recent monitoring, slope cutting with breaker and
driller were the major sources of the construction noise.
Concurrent
construction projects adjacent to Tseung Kwan O tunnel were another noise
source, however, these were considered a minor impact to Hong Wah Court as
those projects were located further away and the influence was not significant
according to the observation during environmental measurement.
According
to the monitoring data in July 2020 after observing the breaking works at
station, NMC05 – Yee Hong House of Hong Wah Court, no noise exceedance was
recorded. Although measurement for the confirmation of exceedances have been
conducted twice, no exceedances were recorded for the second measurement.
Additional
noise monitoring had been conducted by ET at ground level and also at 34/F of
block B on 30 July 2020 and 1 August 2020 for the complaint investigation and
no exceedances were recorded.
The construction
activities at Lin Tak Road, especially for slope cutting works with breaker and
driller, were the major noise nuisance at Lin Tak Road near Hong Wah Court.
Site
visits were conducted by ET on 30 and 31 July 2020 and 1 August 2020, drilling
work, excavators and splitor were observed as the major activities at that
moment.
Noise
barriers were in place but the mitigation measures for reducing noise nuisance
to upper level was not enough.
Remedial
action taken according to the observations by ET:
1. Setting up of noise barriers for the covering
of working area and the plant was observed since 15 June 2020.
2. Quieter breaker, claimed by the contractor, was
observed installed.
3. The plant and working area were covered by
noise barrier in most of the time during noise monitoring and site inspections.
4. Sequencing of works was observed that the
driller and breaker were operated alternatively to avoid concurrent noisy
works.
8.0.6.
The details of cumulative complaint log and updated summary of
complaints are presented in Appendix 8.1.
8.0.7.
Cumulative statistic on complaints and successful prosecutions are
summarized in Table 8.1 and Table 8.2 respectively.
Table 8.1 Cumulative
Statistics on Complaints
Reporting
Period |
No.
of Complaints |
July
2020 |
5 |
Project
commencement to the end of last reporting month |
6 |
Total |
11 |
Table 8.2 Cumulative
Statistics on Successful Prosecutions
Environmental
Parameters |
Cumulative
No. Brought Forward |
No.
of Successful Prosecutions this month (Offence Date) |
Cumulative
No. Project-to-Date |
Air |
- |
0 |
0 |
Noise |
- |
0 |
0 |
Water |
- |
0 |
0 |
Waste |
- |
0 |
0 |
Total |
- |
0 |
0 |
9.0.1.
The EM&A programme was carried out in accordance with the EM&A
Manual requirements, minor alterations to the programme proposed were made in
response to changing circumstances.
9.0.2.
The performance of the environmental management system of the previous
three months (quarter) was generally satisfied. Mitigation measures according
to the environmental mitigation implementation schedule and the EIA were
generally implemented by the Contractor. Hence, the EM&A programme was
considered effective and shall be maintained. The status of the water quality
station shall be kept in view, as station E usually was dried out.
9.0.3.
The scheduled construction activities and the recommended mitigation
measures for the coming 2 months are listed in Table 9.1. The construction programmes of the Project are provided
in Appendix 9.1.
Table 9.1 Construction Activities and Recommended
Mitigation Measures in Coming Reporting 2
Months
Key Construction Works |
Recommended Mitigation Measures |
·
Site formation and temporary soil nail installation at RWC2 Type 1
& 1a and 2; ·
Site formation and temporary soil nail installation for RIW2 Type 6,7
& 8; ·
Gasmain redirection at Slip Road 2; ·
RC base slab construction at KS27; and ·
Construction at FE1 Footing. ·
ELS at Zone 6 & 7; ·
Retaining wall construction for Bay 2 to 8; ·
Removal of Lamp posts and erect temporary lamp posts at Central Median
for later road diversion; ·
Piling construction at CT4; ·
Mini-pile installation works at RWD1; ·
ELS construction for Noise Barrier Footing SE1; ·
Mini-pile and ELS construction at Slope D2; ·
Plate Load Test at Bay 3 of Retaining Wall RWD2 at Slope D2; ·
Construction of Retaining Wall RWD2 at Slope D2; ·
Stage 1 rock excavation at Slope D3; and ·
Retaining wall construction at Slope D3; ·
No-fines concrete construction at Slope D3; ·
Rock-fall Fence (Stage 2) along Lin Tak Road. ·
Watermain works at Sau Mau Ping Road |
·
Dust control during dust generating works; ·
Implementation of proper noise pollution control; and ·
Provision of protection to ensure no runoff out of site area or direct
discharge into public drainage system. |